Oil brake



Feb. 15, 1927.

L. QBEARD E OIL BRAKE Filed June 7, 1926 Attorney I Ze ofiarJ O 36 1" Inventors 5: 1 JBenQ i'Se n I V q 3 I Patented Feb, '15, 1927.

STATES H PATE T LEONARD O. BEARD AND SALOY J. IBENDTSEN, OF CONCRETE, WASHINGTON.

OIL BRAKE.

Application filed June 7, 1926. Serial No. 114,196.

The present invention relates to a braking structure of the pneumatic type and aims to provide a contrivance of this nature wherein a rotor in a casing causes the circulation of oil contained within the casing, and a valve for controlling, retarding and stopping the flow of oil for controlling, re-

tarding and stopping the rotation of the rotor.

Another very important object of the invention lies in the provision of a device of this naturewhich is exceedingly simple in its construction. inexpensive to manufacture. eflicient and reliable in operation. compact and convenient, strong and durable, and

otherwise well adapted to the purpose for which it isdesigned. I

With the above and numerous other objects in view as will appear as the description proceeds, the invention resides in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more fully described and claimed. 7

In the drawing Figure 1 is a sectional elevation of the braking structure embodying the features of our invention, showing the cap of the casing removed, and

Fig. 2 is a detail section taken substantially on the line 2-2 of Fig. 1.

Referring to the drawing in detail, it

will be seen that the numeral 5 denotes a circular casing having one side thereof opened. said open side being closed by a removable cap 6. A shaft 7 is journaled for rotation in the casing ofl center thereof and has keyed thereto, as at 8 or in any other preferred manner, a rotor 9 which has a substantial circular periphery which will clutch a point designated at 10 of the interior of the casing 5.

A by-pass structure 11 is formed exteriorly of the casing communicating with the interior thereof, to each side of the point 10. A valve 12 is mounted intermediate the ends of the by-pass for controlling the flow of oil therethrough. A filling plug 13 is provided in the by-pass structure for filling'the casing with oil. 1

A suitable number of rings 14 are provided on each face of the rotor 9. On the periphery of this rotor 9 there is provided two pairs ofrecesses 15, said pairs being diametrically opposed to each other. Padti e 16 is hingedly mounted as at 17 in each recess 15, and is pressed outwardly by a plunger 18 slidable in a recess 19 in the rotor and pushed outwardly by a spring 20 in said recess.

When the rotor is moving by being coupled to the structureradapted to be braked, it will be seen thatthe oil in the casing is circulated thereabout through the by-pass structure 1-1 when the valve 12 is closed. This is caused by the paddles which are spring pressed outwardly, but as they pass the point '10 they will be forced into their recesses 15. Obviously, by partially closing the valve 12, the speed of the rotor 12 will be retarded and may be entirely stopped by closing valve 12.

From the above detailed description, it will be seen that the braking structure is exceedingly simple, consisting of a relatively few number of parts compactly and conveniently arranged to afford the maximum efficiency with ready accessibility, so I that the parts are capable of easy assembly and disassembly.

It is thought that the construction, operation, utility, and advantages of the invention will now be clearly understood Without a more detailed description by those skilled in this art. The present embodiment of the invention has been disclosed in detail merely by way of'example, since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

*It will be apparent that numerous changes in" the details of construction, in the proportions, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described our invention, what we claim as new is I 1. A braking structure including, in combination, a casing, a rotor eccentrically mounted for rotation in the casing so'that the periphery of the rotor touches a predetermined point in the casing, said casing provided with a by-pass about said point,

- a valve in the by-pass, said rotor being pro-- vided on its periphery with two pairs of recesses, said pairs beingdiametrically opposed, a paddle hinged in each recess, and

- spring means urging the paddles outwardly into engagement with the interior periphery of the'casing,

2. A braking structure including, in commounted for rotation in the casing, so that the periphery of the rotor touches a point in the casing, said casing being provided with a by-pass about said point, a valve in the bypass, a plurality of paddles hingedly mounted on the periphery of the rotor, and spring means urging the paddles outwardly into engagement with the interior periphery of the casing.

3. A braking structure, including in combination, a casing, a rotor eccentrically mounted vfor rotation in the casing so that the periphery of the rotor touches a point in the casing, said casing being provided pairs bemg diametrically opposed to each.

other, a paddle hinged in eah recess, a plunger slidable in a pocket provided in these recesses, and e spring in said pocket for forcing said plunger outwardly against the paddle so that said paddle touches the interior periphery of the casing.

In testimony whereof We afiix our signatures.

LEONARD O. BEARD. SALOY J. BENDTSEN. 

